1 //===- HexagonBaseInfo.h - Top level definitions for Hexagon ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains small standalone helper functions and enum definitions for
11 // the Hexagon target useful for the compiler back-end and the MC libraries.
12 // As such, it deliberately does not include references to LLVM core
13 // code gen types, passes, etc..
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H
18 #define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H
20 #include "HexagonDepITypes.h"
21 #include "MCTargetDesc/HexagonMCTargetDesc.h"
25 /// HexagonII - This namespace holds all of the target specific flags that
26 /// instruction info tracks.
28 unsigned const TypeCVI_FIRST = TypeCVI_4SLOT_MPY;
29 unsigned const TypeCVI_LAST = TypeCVI_ZW;
37 NoAddrMode = 0, // No addressing mode
38 Absolute = 1, // Absolute addressing mode
39 AbsoluteSet = 2, // Absolute set addressing mode
40 BaseImmOffset = 3, // Indirect with offset
41 BaseLongOffset = 4, // Indirect with long offset
42 BaseRegOffset = 5, // Indirect with register offset
43 PostInc = 6 // Post increment addressing mode
55 // MCInstrDesc TSFlags
56 // *** Must match HexagonInstrFormat*.td ***
58 // This 7-bit field describes the insn type.
65 // Packed only with A or X-type instructions.
68 // Only A-type instruction in first slot or nothing.
69 RestrictSlot1AOKPos = 9,
70 RestrictSlot1AOKMask = 0x1,
72 // Predicated instructions.
75 PredicatedFalsePos = 11,
76 PredicatedFalseMask = 0x1,
77 PredicatedNewPos = 12,
78 PredicatedNewMask = 0x1,
79 PredicateLatePos = 13,
80 PredicateLateMask = 0x1,
82 // New-Value consumer instructions.
85 // New-Value producer instructions.
87 hasNewValueMask = 0x1,
88 // Which operand consumes or produces a new value.
91 // Stores that can become new-value stores.
94 // New-value store instructions.
97 // Loads that can become current-value loads.
100 // Current-value load instructions.
106 ExtendableMask = 0x1,
107 // Insns must be extended.
110 // Which operand may be extended.
111 ExtendableOpPos = 25,
112 ExtendableOpMask = 0x7,
113 // Signed or unsigned range.
114 ExtentSignedPos = 28,
115 ExtentSignedMask = 0x1,
116 // Number of bits of range before extending operand.
118 ExtentBitsMask = 0x1f,
119 // Alignment power-of-two before extending operand.
121 ExtentAlignMask = 0x3,
130 RestrictNoSlot1StorePos = 39,
131 RestrictNoSlot1StoreMask = 0x1,
133 // Addressing mode for load/store instructions.
136 // Access size for load/store instructions.
137 MemAccessSizePos = 45,
138 MemAccesSizeMask = 0xf,
140 // Branch predicted taken.
144 // Floating-point instructions.
148 // New-Value producer-2 instructions.
149 hasNewValuePos2 = 52,
150 hasNewValueMask2 = 0x1,
151 // Which operand consumes or produces a new value.
153 NewValueOpMask2 = 0x7,
155 // Accumulator instructions.
157 AccumulatorMask = 0x1,
159 // Complex XU, prevent xu competition by preferring slot3
160 PrefersSlot3Pos = 57,
161 PrefersSlot3Mask = 0x1,
171 // *** The code above must match HexagonInstrFormat*.td *** //
173 // Hexagon specific MO operand flag mask.
174 enum HexagonMOTargetFlagVal {
175 // Hexagon-specific MachineOperand target flags.
177 // When changing these, make sure to update
178 // getSerializableDirectMachineOperandTargetFlags and
179 // getSerializableBitmaskMachineOperandTargetFlags if needed.
182 /// MO_PCREL - On a symbol operand, indicates a PC-relative relocation
183 /// Used for computing a global address for PIC compilations
186 /// MO_GOT - Indicates a GOT-relative relocation
189 // Low or high part of a symbol.
193 // Offset from the base of the SDA.
196 // MO_GDGOT - indicates GOT relative relocation for TLS
197 // GeneralDynamic method
200 // MO_GDPLT - indicates PLT relative relocation for TLS
201 // GeneralDynamic method
204 // MO_IE - indicates non PIC relocation for TLS
205 // Initial Executable method
208 // MO_IEGOT - indicates PIC relocation for TLS
209 // Initial Executable method
212 // MO_TPREL - indicates relocation for TLS
213 // local Executable method
216 // HMOTF_ConstExtended
217 // Addendum to above, indicates a const extended op
218 // Can be used as a mask.
219 HMOTF_ConstExtended = 0x80,
221 // Union of all bitmasks (currently only HMOTF_ConstExtended).
222 MO_Bitmasks = HMOTF_ConstExtended
225 // Hexagon Sub-instruction classes.
226 enum SubInstructionGroup {
236 // Hexagon Compound classes.
245 INST_PARSE_MASK = 0x0000c000,
246 INST_PARSE_PACKET_END = 0x0000c000,
247 INST_PARSE_LOOP_END = 0x00008000,
248 INST_PARSE_NOT_END = 0x00004000,
249 INST_PARSE_DUPLEX = 0x00000000,
250 INST_PARSE_EXTENDER = 0x00000000
253 enum InstIClassBits : unsigned {
254 INST_ICLASS_MASK = 0xf0000000,
255 INST_ICLASS_EXTENDER = 0x00000000,
256 INST_ICLASS_J_1 = 0x10000000,
257 INST_ICLASS_J_2 = 0x20000000,
258 INST_ICLASS_LD_ST_1 = 0x30000000,
259 INST_ICLASS_LD_ST_2 = 0x40000000,
260 INST_ICLASS_J_3 = 0x50000000,
261 INST_ICLASS_CR = 0x60000000,
262 INST_ICLASS_ALU32_1 = 0x70000000,
263 INST_ICLASS_XTYPE_1 = 0x80000000,
264 INST_ICLASS_LD = 0x90000000,
265 INST_ICLASS_ST = 0xa0000000,
266 INST_ICLASS_ALU32_2 = 0xb0000000,
267 INST_ICLASS_XTYPE_2 = 0xc0000000,
268 INST_ICLASS_XTYPE_3 = 0xd0000000,
269 INST_ICLASS_XTYPE_4 = 0xe0000000,
270 INST_ICLASS_ALU32_3 = 0xf0000000
273 LLVM_ATTRIBUTE_UNUSED
274 static unsigned getMemAccessSizeInBytes(MemAccessSize S) {
276 case ByteAccess: return 1;
277 case HalfWordAccess: return 2;
278 case WordAccess: return 4;
279 case DoubleWordAccess: return 8;
283 } // end namespace HexagonII
285 } // end namespace llvm
287 #endif // LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H